I have two versions of wide drum brakes. One has the 1" spacer in a solid piece and the other type has 8 sections cut out between the stud holes as if to lighten it, part number 21A1279.
Anyone know the difference ?

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76 1275 Leyland S

The 2nd type is Cooper S rear, the 1st type is Mini S (Clubbie).

Both do the same job- my Mini has 1 of each at the mo.

ps. there's another one too- only 19mm spacer bit- used on some Mokes...

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

another interesting fact is that the front shoes are WIDER than the rears, so i did a little playing round and the wider front shoes fit into the rear drums so is there any benefit in doing this?

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lookin for another clubby

NO!

I've seen this tried a few times.

Unless you pack the wheel cylinders out somehow the shoes won't sit square, and they will wear crooked.

Anyhow, you don't need more braking on the back- on a damp road it's dangerous if they lock up.

Concentrate on getting your Honda discs working...

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.